Excavating apparatus and drag bucket



1. c. MUNDY AND H. T. WILSON. EXCAVATlNG APPARATUS AND DRAG BUCKET.

APPLICATION FILED FE-B. 12. I92!- 3 SHEElS-SHEET I.

v I I 1 W Afro/m sr- J. C. MUNDY AND H. T. WILSON.

EXCAVATING APPARATUS AND DRAG BUCKET.

APPLICATION FILED FEB. I2. 192

27 3 SHEETS-SHEET 2.

vllliil I 1 I III (II! .l. C. MUNDY AND H. T. WILSON. EXCAVATING APPARATUS AND DRAG BUCKET.

. APPLICATIQN FILE D FEB. 12, 19 21. P t t dJ 3 SHEETS-SHEET 3- ATTORNEY 7 JOHN G. MUNDY, F PHILADE PHIA, ,AND HARRY r. WILSON, I PENNSYLVANIA.

OF TU'LLYTOWN,

EXGAVATING APPARATUS AND DRAG BUCKEEIL.

Specification 01" Letters-Patent. Patented June 27,

Application filed February 12, 1921. Serial No.- 444,464.

T 0 all whom. it may concern:

Be it known that we, JOHN C. MUNDY and f HARRY T. WILSON, citizens of the United States, residing atPhiladelphia and Tullytown, in the counties of Philadelphia and Bucks, respectively,-and Statejof Pennsylvania, have invented certain new and useful Improvements in Excavating Apparatusand Drag Buckets, of which the following is a specification, reference being had-to theaccompanying drawings. e

The purpose of the present invention is to provide an excavating apparatus including a drag bucket to facilitate excavating gen erally, and to providea device of such a character as to consume less head-room for dumping purposes, and at the same time allowing for less clearance above the dump car, and also to provide anapparatus which is simple and inexpensive in operation, and wherein the drag bucket is capable of swlnging back and forth readily.

Another purpose consists in the provision of a drag bucket, which can be placed close to the car and held steady, also allowing the bucket to be swung over the car and opened slowly, permitting the load to drop into the car without a rush or splash of the excavated material.

In devices of this character heretofore used, the dumping of a load in a dump car cannot be accomplished without spilling the material over the ground,on account of the distance the material necessarily has to drop from the bucket to the car, and also on ac count of the excessive swinging motion, and it is the aim of the present invention to overcome these disadvantages.

A further purpose is to provide adrag bucket for excavating machine of the present character, wherein the bucket comprises two hingedly united sections, so put together that while the bucket is held in an engaging position with the ground throughmeans of a pulling cable, the otherv section is held closed by'anoth'er pulling cable, there being means for opening the bucket by separating the sections, after the first and second cable hoists the bucket and-after-the first cable is held taut and the second cable relaxed, the opening section of the bucket being so relatively disposed with regard to the other section, that the bucket may be disposed ad-' jacent the top of the dump car, and yet permit the opening section to open readily,

ment with the ground.

elevation of-thedrag bucket.

the wheel 21;

improved drag and dumpbucket.

lVhile the design and construction at present illustrated and set forth is deemed preferable, it is obviousthat as a result of a reduction of thelinvention to a more practical form for commerical purposes, the invention. may be susceptible ofchanges, and

the right-to these changes is claimed, provided they are comprehended within the scope ofwhat is claimed.

The invention comprises further features and combination of parts, as will be hereinafter set forth, shown in the drawings and claimed. v r

In ;the drawings 2 o- Figure l is aview in side elevation ofthe improved excavating machine as a'whole, showing the -.lifting boom in a raised .position, and the drag bucket elcva'ted',.with the bucket open. ft 1 Y Figure 2 is a view in side elevation of a portion of the boom supportingfra-me, show ing the boom in a requisite lowered position,

with the drag bucket in operative engage- Figure 3 is an enlarged detail view in side Figure 4 is a top plan view of the drag bucket, g Figure 5 1s a plan new of end of the machine showing the shaftQO and Figure 7 is a sectional plan 7''?' of Figure 1.

Figure 8 is a sectional view on line 8-8 view on line of Figure l. v

Figure 9 is adetail view of thebail straps 44, showing the brace 48. Referring-more especially to the'draw-,. ings, 1 designates a portable frame, which is mounted upon suitable forward and rear supporting wheels 2 and '3. These wheels may be of a character to operate on the ground, or may lee-of the character to operate on tracks. I

A conventional form of engine 4 is mounted upon the frame, and in the bearings on the frame a hoisting shaft-5, which has a the controlled hoisting'of the apparatus, for operating the cables,

- Figure 6 is a plan view of the upper front member 11 is pivoted to the frame 1 as at 14, so that the coupling member can move pivotally in a horizontal plane, while through the medium of the pivot 13, the boom is capable of moving in a vertical plane. While the coupling 11 is mounted to move pivotally in a horizontal plane, so that the boom 12 may swing or turn upon a vertical axis, it is the purpose to operate the boom in a direction substantially direct from the rear of the portable frame 1. However any well known conventional means (not shown) may be'employed for turning the boom on its vertical axis and for holding the boom against turning on such axis.

The boom proper carries a plurality of pulleys 15, 16 and 17, and mounted in the projecting members 18 of the boom is a pulley 19. Mounted on a shaft 20 which is carried by the frame 1, is a pulley 21, and operatively connected with the pulley 21 is a hoisting chain 22, which passes over the pulley 19, and thence over the pulley 23. This chain also passes over a pulley 24, which is journaled in the frame 1, and is in turn con nected to and wound about the drum 7. By transmitting power to the drum 7 by means of a clutch mechanism, a pulling action may be imparted to the chain 22, for hoisting the lifting boom 12. 2

Referring more especially to Figures 2, 3 and 4 it will be noted that the apparatusineludes an excavating drag bucket or scoop 25, which comprises the two sections 26 and 27. The'two sections are hingedly united, and where they are so connected a pivoting rod 28 is used. Where the sections 26 and 27 are pivotally connected, the cars 29 of the section 26 overlap the ears 30 of the section 27, and throughthese ears the rod 28 extends, hence pivotally uniting the two sec tions. An elongated sleeve 31 surrounds the pivoting rod 28, and its endsengage with the opposite faces of the ears 30, there being nuts 32 on the ends of the rod, so as to hold the parts pivotally together.

Bail straps 33 also receive the ends ofthe rod 28 and the nuts 32 bear against the outer faces of the bail straps to hold them in position. A handle 34 of the bail straps 33 are fastened by bol s and nuts 35 to the section 27 of the drag bucket or scoop. Obviously when the section 27 opens relatively to the section 26, the bail straps 33 move therewith. The bail straps are reinforced relatively to the section 27 by means of the braces 36, which are connected to the bail straps by "0 means ofnuts and bolts 37. The braces 36 are in turn fastened to the section 27 by nuts and bolts 38. The opposite end portions 39 of the bail straps 33 are extendedin parallelism, and journaled on a pin 40 between the extremities of the portions 39 is a pulley 41. y l

Fastened by means of nuts and bolts 42 and 43 to the opposite sides of the section 26 of the drag bucket or scoop 25 are additional bail straps 44. The end portions 45 of the bail straps 44 are extended in parallelism, and journaled on a pin 46 between the extremities of the portions 45 is a pulley 47. A transversely disposed brace bar 48 fastened by nuts and bolts 49 to the bail straps 44 relatively reinforce the bail straps.

A cable 50 is attached to a bail strap 51 which is connected to the pin 46, and passes over a pulley 52, which is carried by the frame. This cable 50 passes over the pulley 53 and is connected to the drum 8 and wound thereabout.

Connected at 54 to the boom is a cable 55, which passes over the pulley 47 and then over the pulley 15, and thence over the pulley 41. This cable 55 then passes over the pulley 16 and thence over the pulleys 56 and 57, and is then connected and wound about the drum 9. By means of this cable the section 27 of the drag bucket or scoop is manipulated to a closed position, and when the drag bucket or scoop is raised this cable is slackened, when the bucket is opened by 105 means of a chain 58.

The short chain 58 is connected. by a fastener 59 to the section 27 of the drag bucket or scoop, and is in turn connected to a cable 60. which passes over the pulley 17, and 110 thence over the pulleys 61 and 62, and is 1 then connected to and wound about an ad ditional drum 63 on the shaft 5. When the drum 63 is operated, and the cable 55 slackened, and the drag bucket hoisted, the 115 cable 50 having been slackened, the cable pulls upon the section 27 and opens the same, thereby acting to dump the contents of the bucket.

hen excavating the drag bucket or 0 scoop is, lowered and assumes a position. shown in Figure 2, in which case thecable 55 is taken up or tightened for holding the section 27 of the scoop closed, then the drum 8 is operated or put in gear with the shaft 125 5, imparting a pulling action on the cable 50, which will cause the scoop to dig its scooping end or nose into the ground, hence excavating. As soon as the scoop is filled, the cable 50'is allowed to slacken slightly, 30

shown in Figure 1.

in which case the scoop is hoisted by means the bucket is so shaped, that when it is disposed in the position shown in Figure 2, its

' digging or excavating nose 67 will dig into the ground, the inclined wall 68 will then assume an approximate acute angle to the surface of the ground. Furthermore it will be noted that'the section 27 constitutes what may be termed as the rear bottom section, and where the sides of the two sections of the bucket come together, the adjacent edges of the side of the two sections are so curved, that when the bucket is in a hoisted position, they are disposed forwardly and downwardly, namely toward the frame of the apparatus, so that when the bucket is in an excavating position, the section 27 will act as a top for the excavating body section, and since the bail straps 33=extend beyond the pivot rod 28, the cable 55 will act to hold the section 2-? closed. Obviously when the bucket is hoisted to the position shown in Figure 1, the bucket may open by separating the sections without contacting with the top of a dump car, over which the bucket becomes positioned, for dumping that which has been excavated. When the bucket is positioned over the dump car, the section 27 may open without contacting with the top of the dump car. The bucket when so arranged over the dump car is disposed in a very close position to the top, hence the reason for constructing and operating the rear bottom section so that it will not contact with the top of the car.

The invention having been set forth, what is claimed as being useful is:

1. In an excavating apparatus, the combination with a lifting boom, of a supporting frame therefor, an excavating drag bucket comprising an excavating or digging body section and a rear bottom dumping section, said. sections being hingedly connected adjacent their upper edges, whereby when the bucket is in a digging or excavating position the rear bottom section may assume a position, constituting the rear top of the bucket over the excavating section, and when the bucket is hoisted with the lower portion of the bucket in close position to the top of a dump car the rearbottom section may swing open without contacting with the dump car, means for dragging and digging the nose of the excavating body section into the ground, means under tension to hold the rearbottom section closed when the body section is excavating and constituting means for hoisting the bucket when filled, the dragging means having been slackened, and means for opening the rear bottom section after the hoisting means has been par ially slackened, whereby the contents of the bucket maybe discharged. 7

2. In an excavating apparatus,-the combination with a lifting boom, of a'supporting frame therefor, an excavating drag bucketv comprising an excavatingflor digging body section and a rear bottom dumpingsection, said sectionsbeing hingedly connected adjacent their upper edges, w'hereby'when the bucket is in a digging or excavating'position the rear bottom section may assume a'position, constituting the rear top of the bucket I over-the excavating section, and when the bucket is hoisted with the lower portion of the bucket in close 'positionito the top of a dump car the rear bottom section may swing open without contacting with the dump car, means for hoisting the bucket, means for cooperatively connecting with the bottomfand operatively attached with the rear bottom section for opening the same,

whereby the contents may discharge.

3. In an excavating apparatus, an'excavating drag bucket comprising an excavating body section and a rear bottom dump section, a bail connected to the body section and assuming a Vertical position when the bucket is ho1sted,- means pivotally unlting the two sections adjacent their upper edges, whereby the rear bottom section may open rearwardly and upwardly, when the bucket is in a close position to'the top of a dump car, a bail connecting with the pivot between the two sections and in turn connecting with the dumping section, the last mentioned bail extending beyond the pivot, whereby an upward pull upon the extended part of the second bail will hold the dumping section closed, when the bucket is in an excavating position, and means operatively connecting with the extended part of the second bail to hold the dumping section closed.

4:. In an excavating apparatus, an excavating drag bucket comprising an excavating body section and a rear bottom dump section, a. bail connected to the body section and assuming a vertical position when the ing section closed, when the bucket is in an excavating position, and means operatively connecting with the extended part of the second bail to hold the dumping section closed, means operatively connecting with the first bail for hoisting the bucket, means operatively connecting with the first bail for dragging the bucket, and means operatively connecting with the rear dumping section to open the same, when the rear bottom section closing means are partially slackened.

5. In an apparatus for the purpose indicated, an excavating drag bucket comprising an excavating body section having the forward inclined digging wall, which when the bucket 1s disposed in an excavating position, operatively digs its nose into the ground, a rear bottom dumping section sub stantially opposite the digging wall, means adjacent the upper edges of both sections for hingedly uniting the two sections, whereby the rear bottom dumping section constitutes the top when the bucket is in an excavating position, said rear bottom section being so constructed and pivotally united to the body section, as to permit the rear bottom section to swing rearwardly and upwardly when the bucket is in a close position to a -dump car, whereby the bottom section will being so constructed and pivotally united to the body section as to permit the rear bottom section to swing rear-wardly and upwardly when the bucket is in a close position to a dump car, whereby the bottom section will not contact with the car when opened, means operatively connecting with the bottom section at a point intersecting or passing through the pivots of the two sections, for holding the bottom section closed when the bucket is in an excavating position. 7

7 In an apparatus for the purpose indicated, an excavating drag bucket comprising an excavating body section having the forward inclined digging wall, which when the bucket is disposed in an excavating posi tion, operatively digs its nose into the ground, a rear bottom-dumping section substantially opposite the digging wall, means adjacent the upper edges of both sections for hingedly uniting the two sections, whereby the rear bottom dumping sect-ion constitutes the top when the bucket is in an excavating position, said rear bottom section being so constructed and pivotally united to the body section, as to permit the rear bottom section to swing rearwardly and upwardly when the bucket is in a close position to a dump car, whereby the bottom section will not contact with the car when opened, means operatively connecting with the bottom section at a point intersecting or passing through the pivots of the two sections, for holding the bottom section closed when the bucket is in an excavating position, means connecting with the rear bottom section to open the same when the first means is slackened.

In testimony whereof we hereunto affix our signatures.

JOHN C. MUNDY. HARRY T. WILSON. 

